LRDOCS-457 Added info from LPS-30513 into User Guide's JBoss installation section re. deployment order of portal and plugin JAR files; also added note that JBoss 5.1 is incompatible with Java 7
Merge pull request #447 from jrao/LRDOCS-457-6.1.x

http://issues.liferay.com/browse/LRDOCS-457